Teoriya i praktika fizicheskoy kultury №7 2017, pp.47-49

Dr.Med., Associate Professor A.L. Pokhachevsky¹
V.M. Mikhailov²
PhD A.B. Petrov³
PhD D.A. Donskov¹
D.A. Faleev¹
D.A. Pokhachevsky⁴
V.V. Donskova^5
1Academy of the Federal Penitentiary Service of the RF, Ryazan
²Medical Center Mega, Ivanovo
³Lesgaft National State University of Physical Education, Sport and Health, St. Petersburg
⁴Moscow Institute of Physics and Technology, Moscow
⁵Ryazan State University named after S. A. Yesenin, Ryazan

Rates of predictors in access of the tested viability limits may be indicative of the body adaptive capability and physical endurance as verified by the relevant criteria. Objective of the study was to analyse the chronotropic index application benefits for the exercise tolerance tests. Subject to the study was a mixed sample (n = 68) of practically healthy senior schoolchildren and university students under 23 years of age split up into the following groups: Group 1 (n = 32) including sporting young people, and Group 1 (n = 36) composed of non-sporting young people. The sample was tested by maximal cycle ergometer tests to obtain the following test rates: chronotropic indices (CI), HR, mathematical model markers for the cardiorhythmograms; and Spearman probe rates versus exercise tolerance. The tests showed the CI values being lower than the viability rates (85%) in both groups, with the values falling in the following sequence: S, 2, 1. It should be noted that the CI under load and HR in the rehabilitation process statistically dominated in Group 2; and the post-load rates and dHR (difference of the peaking and resting HR) – in Group 1. Correlations of the test rates found by the study are indicative of the CI formation logics for different physical working capacity rates. Based on the study data and analyses, we came to conclusion that the CI values vary inversely to the physical working capacity rates; and this finding must be taken into account by analyses of the exercise tolerance, with due consideration given to the training process priorities and specifics.

Keywords: cycle ergometry, cardiorhythmogram, exercise tolerance, chronotropic index, insufficiency.

References

1. Lapkin M.M, Pokhachevskii A.L. Importance of RR-Interval Variability in Stress Test. Human Physiology, 2017, vol. 43, no. 1, pp. 71-77.
2. Mikhailov V.M. Nagruzochnoe testirovanie pod kontrolem EKG: veloergometriya, tredmill-test, step-test, khodba [Load testing under control of ECG: cycle ergometry, treadmill test, step test, walking]. Ivanovo: Talka publ., 2008, 545 p.
3. Pavlov S.E., Pavlova T.N. Tekhnologiya podgotovki sportsmenov [Athletic training technology]. Shchelkovo: Markhotin P.Yu. publ., 2011, 344 p.
4. Pokhachevskiy A.L. Opredelenie adaptatsionnogo potentsiala po raspredeleniyu kardiointervalov pri veloergometrii [Cycle ergometry to determine adaptive potential for distribution of RR intervals]. Voenno-meditsinskiy zhurnal, 2010, no. 6 (331), pp. 46-47.
5. Myers J., Prakash M., Froelicher V., Do D., Partington S., Atwood J.E. Exercise capacity and mortality among men referred for exercise testing. N Engl J Med., 2002, vol. 346, pp. 793-801.